Apparatus for raising liquids by compressed air.



P. KESTNER'. APPARATUS FOR RAISING LIQUIDS BY COMPRESSED AIR.

APPLICATION FILED 001215. 1909.

1,025,699; PatentedMay7,1912.

PAUL xns'rnnn, or LILLE, FRANCE.

APPARATUS FOR RAISING LIQUIDS BY COMPRESSED AIR.

' Specification of Lctters Patent.

PatentedMay 7, 1912.

Application tiled October 15, 1909. Serial No. 522,810.

To all wkomit may concern:

Be it known that I, PAUL Kns'rxnu, a citizen of the Republic of France, and a resident of Lille, Department Nord, France, have invented certain Improvements in Apparatus for Raising Liquids by Compressed Air, of which the following is a specification.

This invention has reference to that class of apparatus working on the pulsation principle for raising liquids. in which a single chamber first fills up with the liquid to be raised that flows under a head into the apparatus through a retaining valve and is then emptied by admitting compressed air into the chamber. Such apparatus must be provided with a device which alternately opens and closes the compressed air inlet, and simultaneously with the opening and closing respectively, shuts off and establishes communication bctweenthe air inlet valve box and the atmosphere, and .my invention consists of an automatically operating device of this kind, fully illustrated in the accompanying drawings, in which:

Figure 1, shows a complete apparatus of the kind in question intended more especially for-raising an acid liquid; Fig. 2, is an enlarged view of my automatically operating valve structure. Figs. 3 and 4, are sectional views on the lines (tr-(1 and b-J) respectively, Fig. 2; Fig. 5, shows a variation of the valve structure. and Fig. 6, is a view,

illustrating a detail of my invention.

Referring to the drawings, 1 represents the pulsation chamber, which provided with an inlet )i e 2 by which the liquid enters under sutilclent head through a suitable retaining valve 3, and with a discharge pipe 4 through which the liquid is forced out of the apparatus.

5 represents a box inclosing the valvemotion, 1'. c. the part of the apparatus which forms the subject-matter of the present invention. The chamber formed by this box communicates with the chamber 1 by means of a tube 6 through which a rod or wire 7 passes, connecting the valve structure contained in said box 5 to a cylindrical body 8. the upper part of which extends into a cylindrical recess 9 formed in the upper part of the chamber 1. From Figs. 2, 3 and 4, which show the box inclosing the valve structure. on an enlarged scale, it will be seen that tlie r0d 7' is suspended from one end of a lever 10 in the form of a balance beam which rests or is fulcrumed upon a knife edge 11. The other end of this beam.

carries an exhaust valve 1.3, and an outside lever 13 provided with a counterweight 14 ishookcd onto the stem 15 of said exhaust the cylinder 8 may act, the lever 10 closes the compressed air inlet valve 16, While the exhaust valve 12 is simultaneously opened.

The action of the apparatus is as follows: Assuming the chamber 1 to be empty to commence with, the full weight of the cylinder 8 acts upon the com ressed air inlet valve. 16, and the exhaust t iirough the valve 12 being free, liquid can flow into the chamher 1. The weight and the volume oft-he cylindrical float 8 are such that so long as the liquid does not extend up to the cylindrical recess 9 into which the upper part of this float enters, the weight of the float overbalances the counterweight 14 and is suflicient to keep the compressed air inlet; valve 16 closed; But immediately-the liquid has filled the chamber 1 completely and reaches the cylindrical recess 9, the conditions change. At this moment the cylinder 8 being entirely immersed in the liquid loses its preponderance and the counterweight 14 overbalanccs the same, the result bein that thebeam 10 is tilted, closing the val ve 12 and opening the valve 16 and the compressed air rushes in through the latter and forces .the liquid out of the chamber 1 through the pipe 4. The pressure within the apparatus (cops the exhaust valve 1.2 closed, the surface of this valve being such that even when the cylinder 8 is completely out of the liquid its weight cannot dra the said valve from its-seat. When the liquid has been completely forced out, the air escapes in its turn throught-he pipe 4 and this brings about an instantaneous lowering of the pressure within the apparatus. At this moment, the valve 12 is lifted from its seat by the action of the weight of the cylinder 8, and the beam or lever 10 falls upon and closes the valve 16 and a fresh pulsation beins. g In the valve structure shown in Fig. 5, the construction is somewhat varied. In this arrangement, the counterweight 14 acts directly upon the exhaust valve 12, and the exhaust takes place through. a passage 17 formed at the side of an exhaust box 18 so that the exhaust air may be carried away by suitable piping in order to obviate the danger attending the discharge of acid vapors, and the lever 10 bears upon the air inlet valve 16 through the intermediary of a screw 19 by means of which the length of stroke can be readily limited according to requirements. It is well known that with a small output apparatus of this kind is not very certain in its action unless the stroke is reducedv to the minimum. Regulation of the strokemay be effected from the outside in various simple ways; for example, by adjusting the seat of the escape valve 12, or the knife edge 11, or the compressed air valve 16, and these adjustments may be made by hand. 'In Fig; 6, I have shown means for adjusting the compressed air valve 16. In

this instance I provide a stem 16 adapted to,

contact with the valve; which stem l6 extends below the casing of the valve structure and is provided with a threaded portion 20 i and. a polygonal head 21 for engagement by a wrench to effect the desired adjustment. lhe stem 16 may be packed to avoid leakage.

I claim:

1. In pulsation apparatus for raising liquids, of that type in which a body immersed in the liquid in the pulsation chamber is balanced exteriorly by a counterweight, the said liquid being forced out of the chamber by compressed air, the combination of a valve structure comprising an inlet valve, an exhaust valve, a fulcrmned lever which acts upon said valves on both sides of its support, a casing in free communication with the pulsation chamber in which said valve structure is completely inclosed, means for actuating said lever, and means for adjusting the length of the stem of the inlet valve to vary the movement of said valve.

2. The combination in a pulsation apparatus, of a valve-structure comprising inlet and outlet valves, a lever for operating the same, and means for actuating the lever, of a device for enabling the stroke of the valves to be regulated according to the output of the apparatus, the said regulating device being adapted to be operated from the outside.

In testimony whereof, I have signed by name to this specification, in the'presence of two subscribing witnesses.

PAUL KESTNER.

Witnesses HENRI CHARRIER, LioN PECKEL. 

